Wolftooth Goatlink bolt replacement

ausdb

Being who he is
It's only a shallow grave dig but has anyone else been in a similar situation to this? I bought a used group a while back with a XT RD M786 that's fitted with a goat link but the bolt for the hanger has gone AWOL as well.

Are there any alternatives to coughing up & waiting for an original replacement, waiting ages for a Chinese knock off to arrive or bodging a cap screw? I'm thinking bodging a cap screw for the time being will be the fastest and cheapest unless I have to buy an absurd minimum order quantity.
 
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